A few people have asked me now about the "Prima" flowers that I use. They are my own creation! I have assembled some of these sets of flowers for sale on Etsy at Seitler's Sweet Shoppe. There are now seven of my thirteen sets listed there. The others should be up soon, but the colors are very similar to the sets I've already listed.
If you are looking for a color combination that you don't see at my shop, then just drop me an e-mail and I can custom make you a set of your own!